Flat roofs leak where water sits or where two pieces of roofing meet: open seams, low spots that pond after rain, and flashing at walls, drains and pipes. We find the entry point, dry and clean the area, repair the membrane with matching material, and fix the low spot or drain so water stops sitting there. You get before and after photos.
Flat and low-slope roofs are common on additions, garages, back porches and older commercial buildings around Pine Bluff. They do not shed water the way a steep shingle roof does, so small defects matter more. A seam that would stay dry on a sloped roof can hold standing water against it for days.
Signs your flat roof is leaking
- Water standing on the roof two days after rain (ponding)
- Bubbles, blisters or wrinkles in the roof surface
- Seams that are lifted, open or patched over and over
- Cracks in the surface, especially on older tar or torch-down roofs
- Stains on the ceiling under the flat section
- Leaks near where the flat roof meets a wall or the main roof
Types of flat roofs we repair
Rubber (EPDM)
Black rubber sheets glued at the seams. EPDM shrinks over the years and the seam glue fails, so leaks usually start at seams and corners. Our answer on why EPDM roofs leak at the seams explains more.
TPO
White single-ply sheets with heat-welded seams. Common on newer commercial roofs. Leaks come from bad welds, punctures and flashing.
Modified bitumen (torch-down or peel-and-stick)
Thick asphalt-based rolls, often on porches, additions and older homes. They crack with age and sun and fail at laps.
Built-up tar and gravel
Layers of tar and felt with gravel on top, common on older downtown buildings. They crack, blister and leak at flashing and edges.
Rolled roofing
A cheap single layer sometimes used on sheds and porches. It wears out fast, and repairs often mean replacing it.
Why flat roofs leak in Pine Bluff
Standing water is the main enemy. Pine Bluff averages about 50 inches of rain a year and more than 5 inches a month from March through May, and a single low spot collects water from every storm. Industry guidance treats water still sitting 48 hours after rain as ponding, and ponding shortens a flat roof’s life. Summer heat is the second problem: about 23 days a year top 95 degrees, and a dark roof gets far hotter than the air, which dries out seams and sealants. Our guide on water ponding on a flat roof goes into more detail.
How we fix a flat roof leak
Find it
Attic check first, then the roof. A water test if the spot is not obvious.
Price it
A written price for the exact repair. You approve it before we start.
Fix it
We repair the spot that leaks and check the area around it.
Prove it
Before and after photos go to your phone.
Flat roof water can travel a long way under the membrane before it drips inside. We trace it by checking seams, flashing and wet insulation, and water test if needed. Repairs use the same material as the roof: rubber patches and seam tape on EPDM, heat-welded patches on TPO, and modified bitumen patches on torch-down. Caulk or tar on a flat roof is a short-term patch at best. If a low spot keeps ponding, we talk with you about adding a cricket or tapered insulation to move the water to the drain.
Text Jacob a photo of the roof and the ceiling stain. Same-day response in Pine Bluff, and a written price before any work.
Flat roof leak repair cost in Pine Bluff
| Repair | Typical Central Arkansas range |
|---|---|
| Seam or patch repair (moderate repair) | $450 to $1,200 |
| Flashing repair at a wall, drain or pipe | Quoted on site |
| Fixing a ponding area | Quoted on site, depends on size |
| Recovering or replacing the roof | Quoted on site |
Ranges based on published Central Arkansas roofing cost guides (2025 and 2026). They are not quotes. Your written price comes after we look at your roof, and you approve it before any work starts. See flat roof leak repair cost.
What you can check yourself
If you can see the flat roof safely from a window or a ladder at the edge, look for ponding a day or two after rain, debris around drains, lifted seam edges, and bubbles in the surface. Do not walk on a flat roof you are not sure of, especially an old one over a porch. Inside, note the size and location of the stain. Photos of both help us plan.
Repair, recover or replace?
A flat roof with a few bad seams on sound decking is a repair. When the membrane is cracked everywhere, the insulation below is soaked, or the roof keeps leaking in new spots every season, a recover or replacement is usually cheaper over time. We show you photos and the options. Garages and porch roofs have their own page: porch, patio and carport roof leak repair. Business buildings: commercial roof leak repair.
Flat roof leak FAQ
Is standing water on a flat roof normal?
A little water that dries within a day or two is common. Water still sitting 48 hours after rain is ponding, and it wears the roof out faster and finds any weak seam.
Can you patch a rubber roof?
Yes. EPDM is repaired with rubber patches and seam tape after cleaning and priming the surface. Tar and caulk do not bond well to rubber.
Why does my flat roof leak far from where the stain is?
Water can travel under the membrane or along the decking before it drips. That is why we trace it instead of patching right above the stain.
Can a coating fix my flat roof?
A coating can extend a sound roof and cover small cracks, but it will not fix wet insulation or open seams. See roof sealing and coating.
Do you work on flat roofs on houses?
Yes, on additions, porches, garages and carports, as well as small commercial buildings.